Introduction to Cloud

Cloud Computing is one of the dominating Domain in IT today. Due to its multiple advantages over a traditional datacenter. You have landed on a page where you will learn cloud from very basics. Any one who is new to cloud I would like to explain it with an analogy, which is easy to understand.

Resources from AWS to get started

Getting Started with AWS Cloud Essentials (amazon.com)

Overview of Amazon Web Services - Overview of Amazon Web Services

Earlier we used to fetch water from river and wells... today you get water from your taps, and we use it in multiple ways. Reduced the hard work on fetching water and we can focus now on how to make best use of it. Business can focus on what they are good at. Cloud computing, like at the water company, dedicated professionals are making sure the service provided is safe, secure, and available on a 24/7 basis.

Olden Days we had Generators to produce electricity, now we switch ON and get electricity as service. Similarly Cloud Computing services can be turned on or off quickly as needed. Providing us with Pay-as-you-go model.

For listening music we used own gramophone, CDs, now we use music as a service from music providers. Reduced the cost of buying CDs. In cloud, analogy we can say it has reduced the cost of Infrastructure also Lowered Complexity Of IT Infrastructure Management.


Cloud computing is helping business to focus more on what is important to them and let experts handle Compute, storage, Network, Database and other IT recourses provided as service to its customers. Customer can use cloud services from anywhere over an Internet. As it is provided as a service there are 3 service models for cloud IAAS, PAAS & SAAS. Customer can use the models as per their requirement. Each model provides us with different level of ownership and user cases.

Cloud Computing - Service Models

  1. IAAS

  2. PAAS

  3. SAAS

Cloud Computing -- Deployment Models

Cloud computing can be deployed with 3 models mentioned below.

  1. Public

  2. Private

  3. Hybrid

There are multiple Cloud service providers today. The 3 Cloud providers who are ruling the market are AWS (Amazon web services, Azure by Microsoft and GCP Google cloud provider. Below mentioned latest Gartner analysis suggest AWS is among the top leader in the market. That gives us an answer for the question Why AWS?